Fountain drawing pen



by the pen.

Patentedjan. 8, 1924..

UNITED STATES lPA itlvT OFFICE; i

ERNST RICHARD GUsTAv ALBERT Rs-LER, Aor HAMBURG, GERMANY, AssIGNoR To` THE Eine-I orsnarno yiniLLERDERGESELLSCHAFT voss, LAUsEN a DzIAMBoR,

or HAMBURG, GERMANY.

= FOUNTAIN DRAWING rRN. I

Application mea Maren 12,1923. seriai'No. 624,610.

To all whom t may. concern.'

ing Pen (for which I have filed an applica-v tion in Germany on Mar. 27 1922), of which the following is a specification,-

The present invention refers to a fountain drawing pen in which the ink is fed froin the fountain by the aid of a movable piston by a tube tothe pen.

The novelty resides in the `fact that the `tube atits end is' cut obliquely at an' angle corresponding to that of the shanks ofthe pen, and that the said end of thetube'with its opening is pressed against the inside ofjfj one of the shanks of the pen by a set screw screwed into the'other shank vofthe pen.

Preferably it is the head ofthe screw lying intermediate of the twoshanks of the penVv which engages the said tube and by the ro-Y tation of the screw-the `points* of the rpen' Shanks move away-from or are allowed to approach one another respectively so as to determine the thickness ofthe line drawn Another feature of novelty consists therein, that the ink feed tube is connected with removable lining .within the fountain in such way, Vthat Vthe lining together with the tube canv be drawn out opposite to the points Y screwestopper 111 a packing 15 is inserted 'thus' preventing 'l'eakages drooved tube v111y andinterinediate thereof and the piston rod 9a thin tube-17 may be in- Y The Ylast named inode of construction ofA the. fountain drawing per. has the advantage. 'g

yof tightness, preventing'the ink from drying up within the feed tube and moreover thereA is the advantage thaty the feed tube together with the lining can be interchanged .with

similar means thus allowing different colours Fig. 1 is a longitudinal section -of -the tation of the tube when the screw 7 is turned;

' fountain drawing pen, and

of one of the Shanks 6 of the pen. For ad- VA'just-ing the' distance of the points of the Be it known that I, ERNST RICHARD Gos. 'rAv ALBERT RSLER, citizen of .Hamburg.,. Germany, residing at Hamburg, Schanz'en-V strasse 7 5/7 7 have invented certain new. and" useful Improvements in a Fountain Draw-r pen auset screw 7 is used, which is screwed intoxone ofthe shanks of the pen,V and bears with `its head7a intermediate of the" two shank'sagainst ,thetube The head 7a is A'roughened or ribbed so as yto allow easy rotation. By the pressure obtainedY by the the screw 7 is'y screwed.

The liningltogether with thetube Sloan bepulled out of the fountain 2 in a direction `opposite the points of the drawing penY when the screw 7 is loosened thereby allow-j ing the tube 3 to return into the eXact'aXialV position with regard to thev boring in the wall 1. f rfhe discharge ofthe ink from the .fountain into-'theftube Y3 is Eobtained Vby the .aid of ka piston` closely fitting withinthe lining ai.. The piston rod'9 is provided'with ylateral projections 10 which engage a spiral Agroove 11 within the tube 1.1a connectedV with rotatable head Vor linger piece 13 by a transversal pin 12. rThis last named tube has ailange 16 bearing against the end face vof Ythe screw-stopper 14 screwed into the end of the fountain 2,1and by the flange 16 the rotatabley head 13 will bein connection with the screwstopperglll in such way that both can be removed from the fountain toigether with the tubeV 11a.

the tube 11a and theenlarged boring of the Within the sorted which fills the annular lspacebetween the vpistonI rod 9 and the inner threaded wall of the tube 112 longitudinally to allowthe projections 10, of the piston rod9` to enter the spiral groove 11. The flange 18 of theslotted tube 17 hasy eEtensions20, whichis attached tothe lining 4 by soldering or the like to preventthe-rowith the screw-stopper 14. The protecting Intermediate of The tube 17 is slotted 'v cap '19 for the pen points can be so constructed that it also can be telescoped over the rotatable khead 13.

By the new fountain drawing pen the following advantages are gained. By the vspring action of the Shanks 6 of the Vpen Y there wiii bea permanent pressure exerted '6, 'and moreover7 whether jin use or not fuse, a drying up vof the ink within the tube on the lfeed tube 3 `when engaged by the Yset screw i, so that the end opening 5 will always bear against the inside of the shank cannot take place. lf, however, at the opening `5. a dry film will be created when the.

pen has not been used for some timev this film will betorii when the fountaink drawing pen is again made use vof by the ink fed under the pressure of thenpiston `8.` The 'effect can ble-stili improved by inserting a` piece of paper or some other tightening plate @betweenv theend of the tube 3 and the shank 6 againstk which itis supposed to bear. Such a piece of paper or the like will improve the tightness and when removed will take along A with itl any film or skin that might have been formed by the ink.

-ff another colour is to be used with the penthe lining together with the tube 3 will be removed and replaced by another with` out necessitating the cleaning ofthe drawing pen on parts which aredifiicult to be got ator even necessitating the use of a 'Y second drawing pen.

a fountain, avtiibecommunicating with the i l -fountainandhaving an obhque opening at claim: Y

l. A fountain drawing .pen comprising its end adapted. to impinge against the in side of one of the Shanks of the drawing pen, -a set screwk screwed intothe other shankY of the pen'and adapted to engage the said tubeto press its .end against the first/named shank. u Y

2. A' fountain drawing` pen vcomprisi*ng a fountain, a tube communicating with the fountain and having an oblique opening at its end adapted to impinge againstthe inside of one fof the shanks of the drawing penna set screw screwed into the other shank ofthe pen and adapted to lengage the said tube to press its end againstthe first named shanin alining'within the fountain and attached tothe feed tube and adaptedto be re-A s inoved from' the fountain together withthe feedingv tube.

3. A fountain drawing pen comprising` a fountain,V a tube communicating with the l ,A fountain and having an oblique ropeningat its end adapted to impinge against the inside of oneof tlieshanks of the drawing pen,

.set screwscrewed into the other shank of the pen and adapted to engage the said tube to press its end against*` the -rst named 4. A fountain dra-wing pen comprising av fountain, aY tube communicating with the fountain and having an oblique openingwatiY its end adapted to impinge against the inside of one jof lthe shanks of the drawing pen', a set screw screwedinto the yother shank of the pen and adapted to lengage the said; tube to press its end against the first named shank,V a'screw-'stopper screwed into the fountain, aV piston withinthe fountain havinga ,piston rod provided on its ends with alateral projection,` la rotatabletube atvthe end of the fountain having `an inner thread into whichthe lateral .projection'of the said piston rod engages.

5. A fountainY drawing pen comprising a fountain, a 'tube communicating with the fountain and having lan oblique openingjat its end adapted to-inipinge against the in-` side of one v of the 'Shanks 4of ythe drawingI pen, a set screwV screwed intolthe other shankl y of the pen andY adapted to engage the said tubertol press its endagainst the `first named shank7 arscrew-stopper screwed intoL the fountain, a piston-within the "fountain having a piston yrod provided on its ends with a lateral projection, a Irotatable tube at the YendA of thef fountain having an inner thread into 7Vwhich the lateralprojection of the said fpistonrod engagespthe lining of the foun-` tain being connectedwith the screw-stopper.

6. A fountaindrawingpen comprising a fountain, a'tuhe l'coinn'oiinicating with/the fountain and havingvan obliquefopening ati its end adapted to vmpinge against the linside vrof onc'o'ftheshanks of the drawing penj* a. setscrew screwed into vthe other shank off ico v the pen andadapted to engage the said tube to press its end against the first named shank, a screw-stopper screwed into the fountain, a piston within the fountain have* ing a piston rod providedon its ends with alateral projection, aV rotatable tube at itlieV end ofthe fountain Vhaving an inner `thread y Y Y into which the lateral projection of the said piston rod engages, the rotatable tube pro?V jecting through V*the screw-stopper and provided with a head oriinger piece, t

In testimony whereof I have signed lmy name to` this specification. s Y

TRIGHARD GUSTAV AALBERT RGSLER.

iio 

